Slay the Spire 2 Guide#

Slay the Spire 2 is the deckbuilding roguelike follow-up from Mega Crit, in Steam Early Access since March 5, 2026 (10:00 a.m. Pacific time on launch day, early morning of March 6 in Beijing), with no 1.0 release yet. It runs on Windows, macOS, Linux, and Steam Deck.

This hub is built on verified facts: cards, relics, and balance numbers keep shifting across patches during Early Access, so everything here was checked against official and public sources as of October 9, 2026, and in-game values always take precedence over anything written on this page.

Game Overview#

How It Differs from the First Game#

If you only played the original, three assumptions need resetting:

1. It is still climb-the-tower card combat, but not the same tower. The story is set roughly a thousand years after the original, with the Spire reopening after a long dormancy. Returning characters come back to a card pool rebuilt from scratch, not a port of the old one.
2. There are no longer four characters. Early Access launched with five playable characters: the returning Ironclad (80 starting HP), Silent (70), and Defect (75), plus two newcomers, Necrobinder (66) and Regent (75). The first game’s Watcher is not in the launch roster.
3. An entire layer of systems the first game never had: between-act Ancients boons, enchantments, afflictions, quest cards, alternate acts, and a permanent progression system called Eras.

On scale, the launch-stage database snapshot (sts2.gg) put the game at 576 cards, 288 relics, 63 potions, 86 encounters, 64 events, 201 powers, and 57 Eras at release; a recent pull of the third-party database (slaythespire2.gg, fall 2026) reads about 626 cards, 311 relics, 65 potions, 127 enemies, 80 encounters, 9 Ancients, and 22 enchantments. Both sets keep moving with patches; the takeaway is simply that the content volume already supports long-term deckbuilding experiments.

The Core Loop: How a Run Unfolds#

The skeleton of a run never changes:

1. Pick a character and enter the map.
2. The map is a branching node graph: each floor you pick one path, and node types include normal fights, elites, events, shops, rest sites, treasure chests, and specific boss nodes.
3. Combat is turn-based: draw cards, read enemy intents, spend your energy, play cards, discard. Once your hand empties, the discard pile shuffles back into the draw pile and the cycle continues.
4. Clear three acts and beat the Act 3 boss, and the run is won.

The roguelike part: when a run ends, your deck and relics reset entirely. What stays on the account is permanent progress such as Era unlocks and character unlocks. The character unlock rule is simple: finish a run with the previous character and the next one unlocks (win, loss, or abandoned run all count; beating the Act 3 boss is not required), in the order Ironclad → Silent → Regent → Necrobinder → Defect.

Three Acts and Alternate Acts#

The three-act skeleton matches the original: each act has its own enemy pool, elites, and boss. The real change is alternate acts:

• Every act is designed in two versions. Act 1 comes as The Overgrowth and The Underdocks, the latter unlocked through the Underdocks Era (cumulative global score).
• As of the October 2026 verification date, only Act 1 has an alternate version; the Act 2 and Act 3 alternates sit at the top of the official roadmap and have not shipped.
• The two versions differ dramatically in environments, enemies, events, and even bosses.

The impact on play is direct: the same opening route cannot be reused on autopilot. The first job when entering an act is reading which version you got — its environment and enemy composition — and only then deciding which direction to push your deck.

Between Acts: The Ancients#

This is the biggest expansion of the “run blessing” idea in the series, and the largest structural break from the original:

• The Ancients are beings whose standing is above ordinary NPCs; 9 are known, including Neow (the Mother of Rebirth), Tezcatara, Orobas, Pael, Vakuu, Nonupeipe, and Darv.
• Neow is fixed at the entrance of Act 1; the Act 2 and Act 3 Ancients are drawn from their own random pools.
• At each blessing point you must pick one of three boons, and every boon is a permanent modification that lasts the whole run.
• The system replaces the original’s boss relics outright: beating an act boss no longer opens a pick-one-of-three boss relic chest, and permanent gains that carry a cost now come exclusively from between-act Ancient boons.
• Ancient nodes have their own markers on the map. Different Ancients have different styles — the Tezcatara line is known for boons that “burn bright and die fast,” a front-loaded burst archetype.

Enchantments and Afflictions#

Think of this pair as two sides of “adding text to a card”:

• Enchantments: a permanent layer applied to a single card, displayed in purple text. They stack with upgrades and never expire for the rest of the run. 22 are known so far; officially revealed examples include Sharp (damage up by level), Corrupted (50% more damage but you lose HP each time you play it), Swift (draws cards the first time you play that card), Imbued (automatically plays the card at the start of each combat), Nimble / Adroit (adds block), and Goopy (growing block). Sources include events (such as Self-Help Book), shop relics (such as Gnarled Hammer), and Ancient boons.
• Afflictions: the reverse side — enemies can corrupt your cards and attach negative effects to them.

The shared tactical meaning: a card’s worth is no longer judged by its face alone. The same card, enchanted or not, afflicted or not, can be worth entirely different amounts. So the question “should I keep this card?” must now be weighed together with its enchantment prospects.

Ascension#

After your first clear (beating the Act 3 boss), Ascension 1 unlocks for that character; each further clear at your current highest level unlocks the next, up to 10 levels, with effects stacking level by level. Progress is tracked per character (5 characters × 10 levels = 50 tracks), and solo progress and co-op progress do not carry over into each other. Unlike the original, Ascension progress can also be earned in custom modes.

The ten modifiers cover two directions: tighter resources (reduced Ancient healing, lower gold income, fewer potion slots, pricier shop card removal, rarer rare cards) and stronger enemies (more elites, more HP, more damage), while level 10 makes you fight two bosses back to back at the end of Act 3.

A complete effect list and a level-by-level counterplan live in the Ascension sub-guide in the Chinese section linked at the bottom of this page.

Four-Player Co-op#

Multiplayer is the most surprising addition, and it was live on day one of Early Access (2-4 players, friend invites, no public matchmaking):

• The map is shared, but resources are individual: relics, cards, and gold are all counted per player.
• Ancients deal each player their own set of random options, and inside events each player can pick a different branch.
• Rest sites gain an extra Mend option alongside the usual choices, used to heal teammates; shops show different stock and prices to each player; chests hand every player a reward, with ownership decided randomly on conflicts.
• Enemy HP scales with player count; third-party estimates put it at about +50% per player (an unofficial figure, for reference only).
• The shared-map, individual-resources rule pushes division of labor to the center of co-op, instead of four decks running side by side.
• Co-op Ascension progress is independent of solo and is shared across the five characters within co-op; the selectable starting level is the lowest in the party.

In other words, co-op is not the single-player game run four times in parallel; it is a mode with a shared rhythm and independent builds.

Market Performance (Verified as of the Check Date)#

• Sales: about 3 million copies in the first week (disclosed by Mega Crit’s community manager); about 4.6 million and over $92 million in revenue within two weeks (an Alinea Analytics estimate), outpacing Hollow Knight: Silksong and Hades II over the same window.
• Concurrent players: a Steam peak of 574,638 (430,409 on day one), called a roguelike genre record by the developers, and at one point ranked 20th on Steam’s all-time chart.
• Reviews: 91% “Very Positive” overall and 72% “Mostly Positive” over the last 30 days as of the check date; in early May 2026 the totals briefly sat at about 164,800 reviews with 62.1% positive, a trough caused by the Major Update #1 nerf controversy and a May review bomb over an advisor controversy.
• Total runs: about 145 million by mid-April 2026 (official Neowsletter issue 21).
• Why the sequel exists: the original had no sequel planned; the 2024 collapse of Humble Games, which handled console and mobile porting and publishing, prompted the project.

Early Access: Cadence and Roadmap#

The official channels are the monthly developer newsletter Neowsletter (megacrit.com/news) and Steam announcements; the Beta branch moved to biweekly updates in May 2026, and in August the studio announced it was slowing the cadence to focus on large content drops. When co-founder Casey Yano published the undated roadmap in April 2026, he wrote that “harsh deadlines only produce rushed, uninspired work” — the no-deadline stance still holds, but the cadence facts are the biweekly Beta and the staged slowdown.

Already delivered (details in the Chinese section’s update sub-guide):

Still on the roadmap (all undated): Act 2 and Act 3 alternate versions, new playable characters, more languages, console and mobile ports, Steam achievements and trading cards (disabled at launch, with no evidence of re-enabling found by the check date), an official Twitch plugin, a deeper “true victory” endgame structure, and cross-platform saves, plus public matchmaking (officially “unresolved”) and in-game text chat (a candidate direction).

What This Hub Will Not Do#

• No hard card-number tables and no “single best deck.” Numbers move with patches during Early Access; freezing a table would only let it expire and misread the game.
• No unconfirmed rumors, leaked rosters, or “insider info” that official channels or public interviews do not back up.
• Where the information boundary is hard, the sub-guides say “cannot be confirmed at this time” instead of filling the page with speculation.

Related Games#

• Slay the Spire — the original deckbuilder that every system in this sequel is measured against
• Hades — a run-based roguelike where permanent meta-progression accrues between deaths
• Hades II — the Early Access sequel whose launch sales are the benchmark cited in the market records above
• The Binding of Isaac — the classic roguelike about runs that snowball into absurd builds
• Balatro — a poker-flavored deckbuilder from the same “one more run” school of design
• Vampire Survivors — another run-based hit built on short loops and long-term unlocks

Related Rankings#

Best Roguelikes · Best Co-Op Games · Best Indies of 2026

Full Guides#

In-depth sub-guides — beginner basics, the five playable characters, the card encyclopedia, deck building, relics and Ancient boons, items and economy, the enemy compendium, an act-by-act walkthrough, Ascension strategy, secrets and events, achievements, endings, multiplayer modes, controls, tips, FAQ, the gallery, lore, and the patch timeline — are available in Chinese on NTGame’s Slay the Spire 2 section.

If you read Chinese, the updates sub-guide there carries the full patch-by-patch record and roadmap reading behind the tables above.